I’ve found there have been a lot of colorful blouses in light flowy fabrics this year like this ruffle cami (30% off), this vertical stripe blouse, or this color blocked blouse. Paired with a slim black pant I think it would suit the occasion!
As for ballet flats, I was just admiring the ones at Loft, three options are: scalloped, color-blocked, and bowed. And they’re all 40% off right now!